DeLisle Stewart
Encyclopedia
| 475 Ocllo 475 Ocllo 475 Ocllo is an asteroid. It was discovered by DeLisle Stewart on August 14, 1901. Its provisional name was 1901 HN.... |
August 14, 1901 |
DeLisle Stewart (March 16, 1870–February 2, 1941) was an American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
astronomer
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
.
In 1896 he became a staff member of Harvard College Observatory
Harvard College Observatory
The Harvard College Observatory is an institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy. It is located in Cambridge, Massachusetts, USA, and was founded in 1839...
, and from 1898 to 1901 he worked at that observatory's station at Arequipa
Arequipa
Arequipa is the capital city of the Arequipa Region in southern Peru. With a population of 836,859 it is the second most populous city of the country...
, Peru
Peru
Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....
, where he took the photographic plates that William Henry Pickering
William Henry Pickering
William Henry Pickering was an American astronomer, brother of Edward Charles Pickering. He was elected a Fellow of the American Academy of Arts and Sciences in 1883.-Work:...
used to discover Saturn
Saturn
Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn is named after the Roman god Saturn, equated to the Greek Cronus , the Babylonian Ninurta and the Hindu Shani. Saturn's astronomical symbol represents the Roman god's sickle.Saturn,...
's moon
Natural satellite
A natural satellite or moon is a celestial body that orbits a planet or smaller body, which is called its primary. The two terms are used synonymously for non-artificial satellites of planets, of dwarf planets, and of minor planets....
Phoebe
Phoebe (moon)
Phoebe is an irregular satellite of Saturn. It was discovered by William Henry Pickering on 17 March 1899 from photographic plates that had been taken starting on 16 August 1898 at the Boyden Observatory near Arequipa, Peru, by DeLisle Stewart...
. He discovered many new nebula
Nebula
A nebula is an interstellar cloud of dust, hydrogen gas, helium gas and other ionized gases...
s.
Later he worked at Cincinnati Observatory
Cincinnati Observatory
The Cincinnati Observatory, located in Cincinnati, Ohio on top of Mt. Lookout. It consists of two observatory buildings housing an 11 inch and 16 inch aperture refracting telescope. It is the oldest professional observatory in the United States...
until 1910, and later founded the Cincinnati Astronomical Society.
He discovered the asteroid
Asteroid
Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...
475 Ocllo
475 Ocllo
475 Ocllo is an asteroid. It was discovered by DeLisle Stewart on August 14, 1901. Its provisional name was 1901 HN....
.